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3 years ago

How do I solve X to the second power -55 equals 26

Mathematics

2 answers:

guapka [62]3 years ago

8 0

Answer:

Solutions x= 9 and -9

Step-by-step explanation:

x^2-55=26

x^2=55+26

x^2=81

(take square root of both sides)

x=9

(squaring negatives is the same as squaring the same positive)

x also=-9

sammy [17]3 years ago

3 0

Answer:

x= 9 x= -9

Step-by-step explanation:

Equation: x^2-55=26

Move -55 to the other side - x^2=55+26 = X^2 = 81

Solve - x^2=81 - 9^2 = 81 and -9^2=81 (a negative squared becomes a positive)

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Pls help me, cause I don't understand one bit of it at all

topjm [15]

Answer:

I promise you this is easier than it looks, just bare with me.

You have to order these numbers from the smallest to the biggest. Now before we do this, we wanna make the fractions and mixed numbers decimals to make this easier.

5 8/11

Convert the fraction to a decimal: Divide the numerator by the denominator. (8 divide by 11).

Add this decimal number to the whole number part of the mixed number. (0.72 plus 5)

It would be 5.72

Now 57/10

The same steps as the last one, but since it isn't a mixed number you don't add anything. (57 divided by 10)

It would be 5.7

Now we have to order them from least to greatest. How do we figure that out? Well lets list the numbers that we have now:

5.72

5.7

5.67

5.726

Now since they all have the same whole number, we just have to look at the numbers after the decimal. Well the least number we have here is "7". Then it would be 67, then 72, then 726.

So the answer would be from least to greatest:

5.7

5.67

5.72

5.726

I hope this helps..sorry if I took so long I wanted to make sure I explained this as good as I can so you don't keep struggling. Good luck, take care <3

Have a good night/day (:! Much love!

8 0

3 years ago

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soldi70 [24.7K]

Answer:WHAT DID U GET FOR THIS PLZZZZZZZZZZZz

Step-by-step explanation:

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3 years ago

The table below shows the velocity y, in miles per minute, of a toy car at different times x, in minutes: Time (x) (minutes) 10

MrMuchimi

A. If you plot the points in a graph, it would look like that shown in the picture attached. If we use linear regression, the correlation is very poor. The coefficient of correlation (r2) is only 0.0017. There is no linear relationship between time and velocity.

B. The slope of the graph is equal to y2-y1/x2-x1, In this case, it would specifically be v2-v1/t2-t1

Slope = 0.8-0.2/20-10 = 0.06 miles/s^2

The slope represents the acceleration at time 10 to 20 minutes.

C. The table in the graph shows causation rather than correlation. The points in the data occur in a sequential manner.